package com.stn.zjx.givingtreasure.widget;

import android.content.Context;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.widget.ScrollView;

public class CustomScrollView extends ScrollView {

              private GestureDetector mGestureDetector;
      OnTouchListener mGestureListener;

              public CustomScrollView(Context context, AttributeSet attrs) {
                 super(context, attrs);
                 mGestureDetector = new GestureDetector(context, new YScrollDetector());
             }

             public CustomScrollView(Context context, AttributeSet attrs, int defStyle) {
                 super(context, attrs, defStyle);
                 mGestureDetector = new GestureDetector(context, new YScrollDetector());
             }

             public CustomScrollView(Context context) {
                 super(context);
                 mGestureDetector = new GestureDetector(context, new YScrollDetector());
             }

             @Override
     public boolean onInterceptTouchEvent(MotionEvent ev) {
                 return super.onInterceptTouchEvent(ev)
                         && mGestureDetector.onTouchEvent(ev);
             }

             // Return false if we're scrolling in the x direction
             class YScrollDetector extends GestureDetector.SimpleOnGestureListener {
         @Override
         public boolean onScroll(MotionEvent e1, MotionEvent e2,
                 float distanceX, float distanceY) {
                         if (Math.abs(distanceY) > Math.abs(distanceX)) {
                                 return true;
                             }
                         return false;
                     }
     }

        }
